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Fibroblast activation protein

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https://www.readbyqxmd.com/read/28550180/a-novel-de-novo-mutation-in-prkag2-gene-infantile-onset-phenotype-and-signaling-pathway-involved
#1
Yanchun Xu, Alex Gray, David Grahame Hardie, Alper Uzun, Sunil Shaw, James F Padbury, Chanika Phornphutkul, Yi-Tang Tseng
PRKAG2 encodes the γ2-subunit isoform of the 5' AMP-activated protein kinase (AMPK), a heterotrimeric enzyme with major roles in regulation of energy metabolism in response to cellular stress. Mutations in PRKAG2 have been implicated in a unique hypertrophic cardiomyopathy (HCM) characterized by cardiac glycogen overload, ventricular preexcitation and hypertrophy. We identified a novel, de novo PRKAG2 mutation (K475E) in a neonate with prenatal onset of HCM. We aimed to investigate the cellular impact, signaling pathways involved and therapeutic options for K475E mutation using cells stably expressing human wild type (WT) or the K475E mutant...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28550085/knockdown-of-sodium-calcium-exchanger-1-induces-epithelial-to-mesenchymal-transition-in-kidney-epithelial-cells
#2
Sona Lakshme Balasubramaniam, Anilkumar Gopalakrishnapillai, Nicholas J Petrelli, Sonali P Barwe
Mesenchymal to epithelial transition (MET) and epithelial to mesenchymal transition (EMT) are important processes in kidney development. Failure to undergo MET during development leads to the initiation of Wilms tumor (WT) whereas EMT contributes to the development of renal cell carcinomas (RCC). The role of calcium regulators in governing these processes is becoming evident. We demonstrated earlier that Na+/Ca2+ exchanger 1 (NCX1), a major calcium exporter in renal epithelial cells, regulates epithelial cell motility...
May 26, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28546514/the-nuclear-matrix-protein-ciz1-facilitates-localization-of-xist-rna-to-the-inactive-x-chromosome-territory
#3
Rebeca Ridings-Figueroa, Emma R Stewart, Tatyana B Nesterova, Heather Coker, Greta Pintacuda, Jonathan Godwin, Rose Wilson, Aidan Haslam, Fred Lilley, Renate Ruigrok, Sumia A Bageghni, Ghadeer Albadrani, William Mansfield, Jo-An Roulson, Neil Brockdorff, Justin F X Ainscough, Dawn Coverley
The nuclear matrix protein Cip1-interacting zinc finger protein 1 (CIZ1) promotes DNA replication in association with cyclins and has been linked to adult and pediatric cancers. Here we show that CIZ1 is highly enriched on the inactive X chromosome (Xi) in mouse and human female cells and is retained by interaction with the RNA-dependent nuclear matrix. CIZ1 is recruited to Xi in response to expression of X inactive-specific transcript (Xist) RNA during the earliest stages of X inactivation in embryonic stem cells and is dependent on the C-terminal nuclear matrix anchor domain of CIZ1 and the E repeats of Xist CIZ1-null mice, although viable, display fully penetrant female-specific lymphoproliferative disorder...
May 25, 2017: Genes & Development
https://www.readbyqxmd.com/read/28545665/astragaloside%C3%A2-against-cardiac-fibrosis-by-inhibiting-trpm7-channel
#4
Jun Lu, Quan-Yi Wang, Yang Zhou, Xiao-Chun Lu, Yong-Hui Liu, Yan Wu, Qiao Guo, Yun-Tian Ma, Yi-Qun Tang
BACKGROUND: Astragaloside Ⅳ (ASG-Ⅳ, (Fig. 1) is the most active component of Chinese sp. Astragalus membranaceus Bunge (Fabaceae) that has showed antioxidant, antiapoptotic and antiviral activities among others. It is reported to play an important role in cardiac fibrosis (CF), but the mechanism remains unclear. PURPOSE: To investigate the mechanism of ASG-Ⅳ on inhibiting myocardial fibrosis induced by hypoxia. STUDY DESIGN: We studied the relationship between anti-fibrotic effect of ASG-Ⅳ and transient receptor potential cation channel, subfamily M, member 7 (TRPM7) by in vivo and in vitro experiments...
July 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28545562/the-inhibition-of-fgf-receptor-1-activity-mediates-sorafenib-antiproliferative-effects-in-human-malignant-pleural-mesothelioma-tumor-initiating-cells
#5
Alessandra Pattarozzi, Elisa Carra, Roberto E Favoni, Roberto Würth, Daniela Marubbi, Rosa Angela Filiberti, Luciano Mutti, Tullio Florio, Federica Barbieri, Antonio Daga
BACKGROUND: Malignant pleural mesothelioma is an aggressive cancer, characterized by rapid progression and high mortality. Persistence of tumor-initiating cells (TICs, or cancer stem cells) after cytotoxic drug treatment is responsible for tumor relapse, and represents one of the main reasons for the poor prognosis of mesothelioma. In fact, identification of the molecules affecting TIC viability is still a significant challenge. METHODS: TIC-enriched cultures were obtained from 10 human malignant pleural mesotheliomas and cultured in vitro...
May 25, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28545186/gallium-nanoparticle-mediated-reduction-of-brain-specific-serine-protease-4-in-an-experimental-metastatic-cancer-model
#6
Enas M Moustafa, Marwa Abdelhameed Mohamed, Noura M Thabet
Purpose: Tumor growth and metastasis depend on angiogenesis; therefore, efforts are being made to develop specific angiogenic inhibitors. Gallium (Ga) is the second most common metal ion, after platinum, used in cancer treatment. Its activities are numerous and various. In the present study, we aimed to investigate the effect of Ga on brain metastasis arising from hepatocellular carcinoma (HCC). Materials and methods: Forty experimental rats (divided into 4 groups) received diethylnitrosamine (DEN) at a dose (20 mg/kg...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28544736/molybdenum-cofactor-deficiency-identification-of-a-patient-with-homozygote-mutation-in-the-mocs3-gene
#7
Jan G M Huijmans, Rachel Schot, Johannis B C de Klerk, Monique Williams, René F M de Coo, Marinus Duran, Frans W Verheijen, Marjon van Slegtenhorst, Grazia M S Mancini
We describe the clinical presentation and 17 years follow up of a boy, born to consanguineous parents and presenting with intellectual disability (ID), autism, "marfanoid" dysmorphic features, and moderate abnormalities of sulfite metabolism compatible with molybdenum cofactor deficiency, but normal sulfite oxidase activity in cultured skin fibroblasts. Genomic exome analysis revealed a homozygous MOCS3 missense mutation, leading to a p.Ala257Thr substitution in the highly conserved ubiquitin-like-domain of the protein...
June 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28543863/prmt8-controls-the-pluripotency-and-mesodermal-fate-of-human-embryonic-stem-cells-by-enhancing-the-pi3k-akt-sox2-axis
#8
Ho-Chang Jeong, Soon-Jung Park, Jong-Jin Choi, Young-Hyun Go, Soon-Ki Hong, Ok-Seon Kwon, Joong-Gon Shin, Rae-Kwon Kim, Mi-Ok Lee, Su-Jae Lee, Hyoung Doo Shin, Sung-Hwan Moon, Hyuk-Jin Cha
Basic fibroblast growth factor (bFGF) supplementation is critical to maintain the pluripotency of human pluripotent stem cells (hPSCs) through activation of PI3K/AKT, rather than MEK/ERK pathway. Thus, elaborate molecular mechanisms that preserve PI3K/AKT signaling upon bFGF stimulation may exist in hPSCs. Protein arginine methyltransferases 8 (PRMT8) was expressed and then its level gradually decreased during spontaneous differentiation of human embryonic stem cells (hESCs). PRMT8 loss- or gain-of-function studies demonstrated that PRMT8 contributed to longer maintenance of hESC pluripotency, even under bFGF-deprived conditions...
May 20, 2017: Stem Cells
https://www.readbyqxmd.com/read/28542982/cancer-associated-fibroblast-derived-lumican-promotes-gastric-cancer-progression-via-the-integrin-%C3%AE-1-fak-signaling-pathway
#9
Xiaofeng Wang, Quan Zhou, Zhenjia Yu, Xiongyan Wu, Xuehua Chen, Jianfang Li, Chen Li, Min Yan, Zhenggang Zhu, Bingya Liu, Liping Su
Gastric cancer (GC) is one of the most frequent malignant tumors worldwide and is associated with high invasiveness, high metastasis, and poor prognosis. Cancer-associated fibroblasts (CAFs), residing around tumor cells in tumor stroma, are important modifiers of tumor initiation and progression. However, the molecular mechanisms by which CAF's modulate tumor development have yet not to be characterized in GC. Here we performed tissue assay analyses identifying that Lumican, an extracellular matrix protein, is highly expressed in human gastric CAFs and its expression is positively associated with depth of invasion, lymph node metastasis, TNM stage, and poor survival rate of GC...
May 23, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28542326/the-murine-cytomegalovirus-m35-protein-antagonizes-type-i-ifn-induction-downstream-of-pattern-recognition-receptors-by-targeting-nf-%C3%AE%C2%BAb-mediated-transcription
#10
Baca Chan, Vladimir Gonçalves Magalhães, Niels A W Lemmermann, Vanda Juranić Lisnić, Markus Stempel, Kendra A Bussey, Elisa Reimer, Jürgen Podlech, Stefan Lienenklaus, Matthias J Reddehase, Stipan Jonjić, Melanie M Brinkmann
The type I interferon (IFN) response is imperative for the establishment of the early antiviral immune response. Here we report the identification of the first type I IFN antagonist encoded by murine cytomegalovirus (MCMV) that shuts down signaling following pattern recognition receptor (PRR) sensing. Screening of an MCMV open reading frame (ORF) library identified M35 as a novel and strong negative modulator of IFNβ promoter induction following activation of both RNA and DNA cytoplasmic PRR. Additionally, M35 inhibits the proinflammatory cytokine response downstream of Toll-like receptors (TLR)...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28541665/identification-of-small-molecule-translesion-synthesis-inhibitors-that-target-the-rev1-ct-rir-protein-protein-interaction
#11
Vibhavari Sail, Alessandro A Rizzo, Nimrat Chatterjee, Radha Charan Dash, Zuleyha Ozen, Graham C Walker, Dmitry M Korzhnev, M Kyle Hadden
Translesion synthesis (TLS) is an important mechanism through which proliferating cells tolerate DNA damage during replication. The mutagenic Rev1/Polζ-dependent branch of TLS helps cancer cells survive first-line genotoxic chemotherapy and introduces mutations that can contribute to the acquired resistance so often observed with standard anti-cancer regimens. As such, inhibition of Rev1/Polζ-dependent TLS has recently emerged as a strategy to enhance the efficacy of first-line chemotherapy and reduce the acquisition of chemoresistance by decreasing tumor mutation rate...
May 25, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28539833/sdf-1-in-mammary-fibroblasts-of-bovine-with-mastitis-induces-emt-and-inflammatory-response-of-epithelial-cells
#12
Guiliang He, Mengru Ma, Wei Yang, Hao Wang, Yong Zhang, Ming-Qing Gao
Fibroblasts constitute the majority of the stromal cells within bovine mammary gland, yet the functional contributions of these cells to mastitis and fibrosis and the mechanism are poorly understood. In this study, we demonstrate that inflammation-associated fibroblasts (INFs) extracted from bovine mammary glands with clinical mastitis had different expression pattern regarding to several extracellular matrix (ECM) proteins, chemokines and cytokines compared to normal fibroblasts (NFs) from dairy cows during lactation...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28538724/applying-systems-level-spectral-imaging-and-analysis-to-reveal-the-organelle-interactome
#13
Alex M Valm, Sarah Cohen, Wesley R Legant, Justin Melunis, Uri Hershberg, Eric Wait, Andrew R Cohen, Michael W Davidson, Eric Betzig, Jennifer Lippincott-Schwartz
The organization of the eukaryotic cell into discrete membrane-bound organelles allows for the separation of incompatible biochemical processes, but the activities of these organelles must be coordinated. For example, lipid metabolism is distributed between the endoplasmic reticulum for lipid synthesis, lipid droplets for storage and transport, mitochondria and peroxisomes for β-oxidation, and lysosomes for lipid hydrolysis and recycling. It is increasingly recognized that organelle contacts have a vital role in diverse cellular functions...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28538690/dysregulation-of-mirna-expression-in-cancer-associated-fibroblasts-cafs-and-its-consequences-on-the-tumor-microenvironment
#14
REVIEW
Maren Schoepp, Anda Jana Ströse, Jörg Haier
The tumor microenvironment, including cancer-associated fibroblasts (CAF), has developed as an important target for understanding tumor progression, clinical prognosis and treatment responses of cancer. Cancer cells appear to transform normal fibroblasts (NF) into CAFs involving direct cell-cell communication and epigenetic regulations. This review summarizes the current understanding on miR involvement in cancer cell-tumor environment/stroma communication, transformation of NFs into CAFs, their involved targets and signaling pathways in these interactions; and clinical relevance of CAF-related miR expression profiles...
May 24, 2017: Cancers
https://www.readbyqxmd.com/read/28537241/-fibroblast-growth-factor-receptor-1-propagates-estrogen-and-fluid-shear-stress-driven-proliferation-and-differentiation-response-in-mc3t3-e1-cells
#15
J Y Li, S G Liu, G N Xiao, M Y Mao, X W Zhang, H Q Sun
Fluid shear stress (FSS) and estrogen exposure positively regulate bone metabolism. Fibroblast growth factor receptor 1 (FGFR1) plays a vital role in FSS-induced osteogenesis. An in vitro experiment with MC3T3-E1 cells combined with microarray analysis aided us in identification of the genes differentially expressed in response to FSS and highlighted the role of FGFR1 in this process. Both estrogen exposure and FSS increase methyl thiazol tetrazolium (MTT) values and alkaline phosphatase (ALP) activity, as well as the levels of Runt-related transcription factor 2 (Runx2) and osteocalcin (OCN)...
March 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28536952/ncam-affects-directional-lamellipodia-formation-of-bmscs-via-%C3%AE-1-integrin-signal-mediated-cofilin-activity
#16
Jia-Jia Bi, Jing Li, Bin-Feng Cheng, Hai-Jie Yang, Qiong-Qiong Ding, Rui-Fei Wang, Su-Juan Chen, Zhi-Wei Feng
The neural cell adhesion molecule (NCAM), a key member of the immunoglobulin-like CAM family, was reported to regulate the migration of bone marrow-derived mesenchymal stem cells (BMSCs). However, the detailed cellular behaviors including lamellipodia formation in the initial step of directional migration remain largely unknown. In the present study, we reported that NCAM affects the lamellipodia formation of BMSCs. Using BMSCs from Ncam knockout mice we found that Ncam deficiency significantly impaired the migration and the directional lamellipodia formation of BMSCs...
May 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28535855/japanese-encephalitis-virus-activates-autophagy-through-xbp1-and-atf6-er-stress-sensors-in-neuronal-cells
#17
Manish Sharma, Sankar Bhattacharyya, Kiran Bala Sharma, Shailendra Chauhan, Suramya Asthana, Malik Zainul Abdin, Sudhanshu Vrati, Manjula Kalia
Endoplasmic reticulum (ER) stress and autophagy are key cellular responses to RNA virus infection. Recent studies have shown that Japanese encephalitis virus (JEV)-induced autophagy negatively influences virus replication in mouse neuronal cells and embryonic fibroblasts, and delays virus-induced cell death. Here, we evaluated the role of ER stress pathways in inducing autophagy during JEV infection. We observed that JEV infection of neuronal cells led to activation of all three sensors of ER stress mediated by eIF2α/PERK, IRE1/XBP1 and ATF6...
May 23, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28535259/altered-organisation-of-the-intermediate-filament-cytoskeleton-and-relocalisation-of-proteostasis-modulators-in-cells-lacking-the-ataxia-protein-sacsin
#18
Emma J Duncan, Roxanne Larivière, Teisha Y Bradshaw, Fabiana Longo, Nicolas Sgarioto, Matthew J Hayes, Lisa E L Romano, Suran Nethisinghe, Paola Giunti, Michaela B Bruntraeger, Heather D Durham, Bernard Brais, Francesca Maltecca, Benoit J Gentil, J Paul Chapple
Autosomal Recessive Spastic Ataxia of Charlevoix-Saguenay (ARSACS) is caused by mutations in the gene SACS, encoding the 520 kDa protein sacsin. Although sacsin's physiological role is largely unknown, its sequence domains suggest a molecular chaperone or protein quality control function. Consequences of its loss include neurofilament network abnormalities, specifically accumulation and bundling of perikaryal and dendritic neurofilaments.To investigate if loss of sacsin affects intermediate filaments more generally, the distribution of vimentin was analysed in ARSACS patient fibroblasts and in cells where sacsin expression was reduced...
May 23, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28534495/exercise-induces-cerebral-vegf-and-angiogenesis-via-the-lactate-receptor-hcar1
#19
Cecilie Morland, Krister A Andersson, Øyvind P Haugen, Alena Hadzic, Liv Kleppa, Andreas Gille, Johanne E Rinholm, Vuk Palibrk, Elisabeth H Diget, Lauritz H Kennedy, Tomas Stølen, Eivind Hennestad, Olve Moldestad, Yiqing Cai, Maja Puchades, Stefan Offermanns, Koen Vervaeke, Magnar Bjørås, Ulrik Wisløff, Jon Storm-Mathisen, Linda H Bergersen
Physical exercise can improve brain function and delay neurodegeneration; however, the initial signal from muscle to brain is unknown. Here we show that the lactate receptor (HCAR1) is highly enriched in pial fibroblast-like cells that line the vessels supplying blood to the brain, and in pericyte-like cells along intracerebral microvessels. Activation of HCAR1 enhances cerebral vascular endothelial growth factor A (VEGFA) and cerebral angiogenesis. High-intensity interval exercise (5 days weekly for 7 weeks), as well as L-lactate subcutaneous injection that leads to an increase in blood lactate levels similar to exercise, increases brain VEGFA protein and capillary density in wild-type mice, but not in knockout mice lacking HCAR1...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28533545/treatment-effects-of-the-traditional-chinese-medicine-shenks-in-bleomycin-induced-lung-fibrosis-through-regulation-of-tgf-beta-smad3-signaling-and-oxidative-stress
#20
Haiyan Chu, Ying Shi, Shuai Jiang, Qicheng Zhong, Yongqiang Zhao, Qingmei Liu, Yanyun Ma, Xiangguang Shi, Weifeng Ding, Xiaodong Zhou, Jimin Cui, Li Jin, Gang Guo, Jiucun Wang
Pulmonary fibrosis is a kind of devastating interstitial lung disease due to the limited therapeutic strategies. Traditional Chinese medicine (TCM) practices have put forth Shenks as a promising treatment approach. Here, we performed in vivo study and in vitro study to delineate the anti-fibrotic mechanisms behind Shenks treatment for pulmonary fibrosis. We found that regardless of the prophylactic or therapeutic treatment, Shenks was able to attenuate BLM-induced-fibrosis in mice, down regulate extracellular matrix genes expression, and reduce collagen production...
May 22, 2017: Scientific Reports
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